html,body
{
	width:100%;
	height:100%;
	padding:0;
	margin:0;
}
.playground{
	width: 529px;
	height: 552px;
	position: relative;
	top:40px;
	background-image:url(./img/tetris.png);
	/*background-position:0px 2px;*/
	background-size:529px 552px;
}
@media screen  and (min-width: 768px) {
	.playground{
		margin: 0 auto;
	}
}
@media screen  and (max-width: 767px) {
	.playground{
		margin:  0;
	}
}
.pause{width: 525px; height: 550px;
	position: absolute;
	top:0;left:0;
	background-image:url(./img/pause.png);
	z-index:100;
	display:none;
}
.playground img{position:absolute;z-index:10;}
.playground p,.playground div{
	font-size: 30px;
	font-family: 'SimHei';
	font-weight: bold;
	color: #667799;
	position: absolute;
	left:305px;
	top:120px;
}
.playground p+p{top:176px;}
.playground p+p+p{top:232px;}          
.playground div
{
	width:100%;
	left:0;
	top:-35px;
	text-align:center;
}         